1/* $NetBSD: if_inarp.h,v 1.51 2017/02/21 03:58:24 ozaki-r Exp $ */
2
3/*
4 * Copyright (c) 1982, 1986, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * @(#)if_ether.h 8.1 (Berkeley) 6/10/93
32 */
33
34#ifndef _NETINET_IF_INARP_H_
35#define _NETINET_IF_INARP_H_
36
37#include <sys/queue.h> /* for LIST_ENTRY */
38#include <netinet/in.h> /* for struct in_addr */
39
40struct llinfo_arp {
41 LIST_ENTRY(llinfo_arp) la_list;
42 struct rtentry *la_rt;
43 struct mbuf *la_hold; /* last packet until resolved/timeout */
44 long la_asked; /* last time we QUERIED for this addr */
45};
46
47struct sockaddr_inarp {
48 u_int8_t sin_len;
49 u_int8_t sin_family;
50 u_int16_t sin_port;
51 struct in_addr sin_addr;
52 struct in_addr sin_srcaddr;
53 u_int16_t sin_tos;
54 u_int16_t sin_other;
55#define SIN_PROXY 1
56};
57
58#ifdef _KERNEL
59
60/* ARP timings from RFC5227 */
61#define PROBE_WAIT 1
62#define PROBE_NUM 3
63#define PROBE_MIN 1
64#define PROBE_MAX 2
65#define ANNOUNCE_WAIT 2
66#define ANNOUNCE_NUM 2
67#define ANNOUNCE_INTERVAL 2
68#define MAX_CONFLICTS 10
69#define RATE_LIMIT_INTERVAL 60
70#define DEFEND_INTERVAL 10
71
72extern struct ifqueue arpintrq;
73void arp_ifinit(struct ifnet *, struct ifaddr *);
74void arp_rtrequest(int, struct rtentry *, const struct rt_addrinfo *);
75int arpresolve(struct ifnet *, const struct rtentry *, struct mbuf *,
76 const struct sockaddr *, void *, size_t);
77void arpintr(void);
78void arpannounce(struct ifnet *, struct ifaddr *, const uint8_t *);
79void arp_drain(void);
80int arpioctl(u_long, void *);
81void arpwhohas(struct ifnet *, struct in_addr *);
82
83void revarpinput(struct mbuf *);
84int revarpwhoarewe(struct ifnet *, struct in_addr *, struct in_addr *);
85#endif
86
87#endif /* !_NETINET_IF_INARP_H_ */
88